/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Lucene.Net.Analysis.Tokenattributes;
using Lucene.Net.Util;

namespace Lucene.Net.Analysis.Sinks
{
    public class TokenTypeSinkFilter : TeeSinkTokenFilter.SinkFilter
    {
        private string typeToMatch;
        private ITypeAttribute typeAtt;

        public TokenTypeSinkFilter(string typeToMatch)
        {
            this.typeToMatch = typeToMatch;
        }

        public override bool Accept(AttributeSource source)
        {
            if (typeAtt == null)
            {
                typeAtt = source.AddAttribute<ITypeAttribute>();
            }

            return typeToMatch.Equals(typeAtt.Type);
        }
    }
}
